发明名称 |
Polymeric coated substrates for producing optically variable products |
摘要 |
<p>A method is provided for forming a strippable or dissolvable release coating on the surface of substrate such as a flexible polymeric film or web. The release coating is subsequently coated with a layer of material and then dissolved in a solvent to release the layer. The release coating is made from a copolymer of methylmethacrylate and ethylacrylate or from a homopolymer of polyacrylic acid. Release coatings made of methylmethacrylate and ethylacrylate copolymers having glass transition temperatures of about 60 DEG C or greater, or made of a polyacrylic acid homopolymer having a glass transition temperature of about 100 DEG C or higher, are also provided. The release coatings provide excellent supporting substrates for the formation of an overcoated metallized layer, are readily strippable in acetone, and can be formed during an in-line process which begins with drawing a flexible film or web from a molten polymeric material. Methods are also provided for making metallized layers used in the production of optically variable flakes and devices.</p> |
申请公布号 |
EP0916704(A2) |
申请公布日期 |
1999.05.19 |
申请号 |
EP19980121399 |
申请日期 |
1998.11.11 |
申请人 |
MITSUBISHI POLYESTER FILM LLC |
发明人 |
HEBERGER, JOHN M.;GUST, STEPHEN J.;CAINES, SCOTT R. |
分类号 |
B29C41/42;B29C41/12;B41M3/14;C09C1/00;C09C1/64;C09D5/00;C09D5/29;C09D5/36;C09D11/00;C09D133/08;(IPC1-7):C09C1/00;B05D5/06 |
主分类号 |
B29C41/42 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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